Dispersible anthraquinone dyestuffs

ABSTRACT

DYSTUFFS OF THE DISPERSE SERIES OF THE FORMULA   1-HO,4-((2-(R-OOC-O-Y-X-)PHENYL)-NH-)ANTHRAQUINONE   WHEREIN X IS -SO2-NH-, -SO2-O-, -SO2- AND -S-, R IS C1-C5-ALKYL, CYCLOHEXYL, PHEENYL OR PHENYL SUBSTITUTED BY CHLORINE, BROMINE, C1-C4-ALKYL OR C1-C4ALKOXY, Y IS C1-C4-ALKYLENE, -CH2CH2-O-CH2CH2-, OR -CH2CH2CH2-O-CH2CH2CH2- AND B MAY BE SUBSTITUTED BY CHLORINE BROMINE, C1-C2-ALKYL OR C1-C2ALKOXY. THE DYESTUFFS ARE SUITED FOR DYING SYNTHETIC ORGANIC FIBERS, ESPECIALLY POLYESTER FIBERS, IN FAST BLUE SHADES OF GOOD FASTNESS.

United States Patt 615cc U.S. Cl. 260-372 3 Claims ABSTRACT OF THE DISCLOSURE Dyestufis of the disperse series of the formula wherein X is SO -NH, SO O, -SO and S-, R is C C -alkyl, cyclohexyl, phenyl or phenyl substituted by chlorine, bromine, C C -alkyl or C -C alkoxy, Y is C 'C -alkylene, CH CH OCH CH 0r and B may be substituted by chlorine, bromine, C -C -alkyl or C -C alkoxy. The dyestuffs are suited for dying synthetic organic fibers, especially polyester fibers, in fast blue shades of good fastness.

CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation-in-part of application Ser. No. 24,809, filed Apr. 1, 1970, still pending.

The present invention relates to difiicultly water-soluble anthraquinone dyestuffs, usable as dispersion dyestuffs, to processes for their production, to the use of these anthraquinone dyestufls for the dyeing or printing of synthetic organic textile fibres, especially textile fibres made from linear polyesters of aromatic polycarboxylic acids with polyfunctional alcohols, or made from cellulose esters and, the textile fibres dyed or printed with said dyestuffs.

It has been found that, difiicultly Water-soluble anthraquinone dyestuffs being free from water-solubilising groups dissociating acid in water and corresponding to the Formula I,

are characterised by particularly advantageous properties, e.g. good aflinity on polyester fibres combined with good fastness to light and sublimation of the dyeings produced therewith.

In the above Formula I,

A represents an a-anthraquinonyl radical containing in the B-positions hydrogen, halogen or a monovalent grouping which is bound to the anthraquinonyl radical by means of an aliphatic carbon atom, by means of a carbon atom containing bound diand/or trivalent hetero atoms, or by means of a hetero atom,

3,767,680 Patented Oct. 23, 1973 Q represents an unsubstituted or substituted arylene radical,

X represents the direct bond, a hetero atom or a hetero grouping,

n represents one of the numbers 1 or 2,

Y represents an alkylene group, optionally substituted by a hydroxyl group or optionally interrupted by oxygen,

R represents an optionally substituted aliphatic, cycloaliphatic or aromatic radical.

The anthraquinone dyestuffs of Formula I are obtained by reacting an anthraquinone compound of the Forwherein A, Q, X, Y and n have the meaning given under Formula I, with a halogen formic acid ester of the Formula III,

Hal-COOR (111) wherein Hal represents chlorine or bromine and -R has the meaning given under Formula I.

The starting materials are so chosen that the obtained anthraquinone dyestulf contains no water-solubilising groups dissociating acid in water, that is to say that it contains for example no sulphonic acid, carboxylic acid or phosphoric acid groups.

The anthraquinone compounds of the Formula II, usable as starting materials, can belong to the series of the actual anthraquinonyl compounds as well as to that of the higher condensed derivatives, e.g. to the group of the anthrapyridinyl, anthrapyrimidinyl, pyrazoleanthronyl, isothiazoleanthronyl and thiopheneanthronyl compounds.

As halogen, the anthraquinonyl radical A can contain in the p-positions, e.g. fluorine, chlorine or bromine. As monovalent groupings in the B-positions, bound to the anthraquinonyl radical by means of an aliphatic carbon atom, lower alkyl groups, optionally substituted by phenyl, hydroxyl or by the grouping O'COOR are, for example, mentioned such as the methyl, benzyl, hydroxymethyl or the ROC-0'CH groups. As mono valent groupings which are bound by means of a carbon atom containing bound diand/ or trivalent hetero atoms, are for example the cyano group, a carboxylic acid amide group, optionally monoor di-substituted by lower alkyl groups, or carboxylic acid ester groups, e.g. a lower alkoxycarbonyl groups such as the carbomethoxy, carbethoxy, carboisopropoxy or carbobutoxy group, and as monovalent groupings which are bound by means of a hetero atom to the anthraquinonyl radical, are for example ether groups such as lower alkoxy or the phenoxy group, thioether groups such as lower alkylthio or phenylthio groups, lower alkylsulphonyl groups, sulphonic acid ester groups, such as lower alkoxy-sulphonyl groups, or sulphonic acid amide groups, optionally monoor di-substituted by lower alkyl groups.

In addition to the aforesaid u-amino-substituent and the monovalent substituents in the ii-positions; as defined, the anthraquinone nucleus can contain substituents in the further a-positions, e.g. hydroxyl groups, nitro groups, primary amino groups or secondary amino groups which are substituted, e.g. by a lower alkyl group such as the methyl, isopropyl or sec. butyl group, a cycloalkyl group such as the cyclohexyl group, an aryl group such as the phenyl, toluyl, 2,4,6-trimethylphenyl, phenoxyphenyl or phenylazophenyl group, as well as by a further R0OC-OY-(XQ),, group.

As arylene radical, Q represents, in particular, a phenylene radical which is optionally substituted by halogen, such as chlorine or bromine, lower alkyl or lower alkoxy groups, or it may also represent a phenoxyphenylene or phenylene-azo-phenylene group.

If X represents a hetero atom, then this is sulphur or preferably oxygen. If X represents a hetero grouping, then this is e.g. an

or a CONH- groups (whereby R denotes hydrogen or a lower alkyl radical).

The alkylene group Y contains preferably at most 6 carbon atoms and can be straight-chained or branched; in the former case it is preferably the 1,2-ethylene, 1,3 propylene or 1,4-butylene group, in the latter case the Z-methyl 1,3 propylene or 2,2-dimethyl 1,3 propylene group. If the alkylene group Y is substituted by a hydroxyl group, it represents especially a 2-hydroxy-l,3- propylene group. If the alkylene group Y is interrupted by oxygen, it denotes in particular a diethyleneor dipropylene-oxy group.

If R represents an aliphatic radical, then it can be, e.g. a straight-chained or branched, optionally substituted lower alkyl or alkenyl group (in the latter case especially a A -alkenyl group) having preferably up to 5 carbon atoms. As substituents, these aliphatic radicals especially the alkyl group can contain, e.g. halogens such as fluorine, chlorine or bromine, or a lower alkoxy group as well as a carbocyclic ring of, in particular, aromatic character such as the phenyl radical, optionally substituted by chlorine or methyl groups, or heterocyclic rings such as the thienyl-(2)-, furyl-(2)- or tetrahydrofuryl-(2)-radical.

Cycloaliphatic radicals denoted by R are, e.g. cycloalkyl groups with preferably 5- or -mernbered rings, and especially the cyclohexyl or methlycyclohexyl group.

When R represents an aromatic radical, then this radical preferably belongs to the benzene series; it can contain usual non-ionogenic ring substituentsv Such substituents are, e.g. halogens such as fluorine, chlorine or bromine, nitro groups, lower alkyl or lower alkoxy groups, preferably chlorine or methyl groups.

Starting materials of the Formula II are for the most part known or they can be produced by methods known per se, e.g. by reaction of an whalogen anthraquinone of the Formula IV,

A-(Hal) (IV) wherein A has the meaning given under Formula I and Hal denotes chlorine or bromine, with an amine of the Formula V,

Z -(Q )B 1 wherein Q, X, Y and n have the meaning given under Formula I.

Suitable tx-halogen anthraquinones of the Formula IV are e.g. l-amino 2,4 dibromoanthraquinone, l-methylamino 4 bromoanthraquinone, 1 isopropylamino-4- bromoanthraquinone, 1 cyclohexylamino 4 bromoanthraquinone, 1 phenylamino 4 bromoanthraquinone, 1 -(2,4',6' trimethylphenylamino) 4 bromoanthraquinone, and suitable amines of the Formula V are, e.g. ethanolarnine, 1,3 propanolamine, l amino-2-, 3- or 4 B hydroxyethoxyibenzene, or l-amino 4 fin dihydroxypropoxybenzene, 1-amino-2-, -3- -4-;3-hydroxyethylaminobenzene, 1-aminobenzene-2-, -3- or -4-carboxylic acid t3 hydroxyethylamide, l-amino-benzene-2-, -3- or -4-sulphonic acid-p-hydroxyethylamide.

The halogen-formic acid esters of the Formula III, usable as starting materials, are likewise for the most part known.

Such esters are: halogen-formic acid-alkyl, -alkenyl, -ar-alkyl, -cycloalkyl or -aryl esters, e.g. chloroformic acid-methyl ester, chloroformic acid-ethyl ester, chloroformic acid-isopropyl ester, chloroformic acid-amyl ester, chloroformic acid-allyl ester, chloroformic acid-cyclohexyl ester, chloroformic acid-benzyl ester, chloroformic and acid-p-methylbenzyl ester, chloroformic acid-p-chlorobenzyl ester, chloroformic acid 7 chloropropyl ester, chloroformic acid-phenyl ester, chloroformic acid-2,4- dimethylphenyl ester or chloroformic acid-4-nitro'phenyl ester, as well as the corresponding bromine derivatives.

The reaction of the anthraquinone compounds of the Formula II with the halogen-formic acid esters is advantageously performed at low temperatures (050 C.) in the presence of acid-binding agents and, optionally, in inert organic solvents.

Suitable as acid-binding agents are, in particular, tertiary nitrogen bases such as pyridine, picoline, quinoline, lepidine, aliphatic amines such as trimethylamine and triethylamine, anilines such as N,N-dimethylaniline and N,N-diethylaniline, also alkali metal or alkali earth metal carbonates, hydrogen-carbonates or hydroxides such as sodium hydrogen-carbonate, potassium carbonate, barium carbonate, sodium hydroxide or barium hydroxide. Suitable inert organic solvents are optionally halogenated or nitrated aromatic hydrocarbons such as toluene, xylenes, chlorobenzene, dichlorobenzene or nitrobenzene, as well as aliphatic halogenated hydrocarbons such as chloroform, carbon tetrachloride or tetrachloroethane, also lower aliphatic ketones such as acetone and cyclic ethers such as dioxan or tetrahydrofuran.

Preferred anthraquinone dyestuffs of the Formula I, which are characterised by a very good affinity, by very good levelling and build-up properties as well as by a good fastness to sublimation and light, correspond to the Formula VI,

A! W Y XAlkyien-OOO o R (vi) wherein W represents halogen such as chlorine or bromine, the cyano group, a lower alkyl group, a carboxylic acid amide or sulphonic acid amide group, optionally substituted by lower alkyl groups, a lower alkoxy-carbonyl group or a lower alkylsulphonyl group,

X represents the direct bond, oxygen, the -NH,

CONH or 4O NHgroup,

alkylene represents a lower alkylene group and R" represents a lower alkyl group or a phenyl radical, optionally substituted by halogen such as chlorine, or lower alkyl groups,

and wherein the benzene ring B is optionally further substituted by halogen such as chlorine, lower alkyl or lower alkoxy groups.

Further anthraquinone dyestuffs, according to the invention, which likewise are characterized by a good afiinity and levelling property, as Well as by good fastness to light and sublimation of the polyester dyeings produced therewith are those of the Formula VlI,

f NH- B X"Y'-'-C 0 o R" (v n) wherein X" represents the direct bond, oxygen or the SO NH- group, Y represents a lower alkylene group, optionally interrupted by oxygen, and

R" and the ring B have the meanings given under Formula In this specification, including the claims, the term lower applied to alkyl and alkoxy groups or moieties means that such groups or moieties have at most 5 carbon atoms.

Anthraquinone dyestuffs of Formula I wherein n is 2, may also be produced by condensing an anthraquinone compound of Formula VIII,

A-V (VIII) wherein A has the meaning given under Formula I and V represents halogen, such as chlorine, bromine or fluo rine, a hydroxyl, nitro or methoxy group, with an amine of the Formula IX,

wherein Q, X, Y and R have the meanings given under Formula I, whereby the starting materials are so chosen that the final dyestuff contains no groups dissociating acid in Water.

Starting materials of the Formula VIII, applicable according to the invention, are for the most part known. Examples of these are:

l-amino-4-bromo-anthraquinone, 1-amin0-4-chloro-anthraquinone, 1-amino-4-hydroxy-anthraquinone, l-amino-4-nitro-anthraquinone, l-amino-4-methoxy-anthraquinone, l-amino-2-carbomethoxy-4-bromo-anthraquinone or 1,4-dihydroxy-anthraquinone.

Amines of the Formula IX to be reacted with the latter compounds of the Formula VIII can be produced in a known manner e.g. bx reacting a nitro compound of the Formula X,

wherein Q, X and Y have the meaning given under Formula I, with a hallogeno formic acid ester of the Formula III given above, whereby the condensation is performed as described in the foregoing, and then reducing the nitro group to the amino group.

Starting materials of the Formula VIII, wherein V represents the hydroxyl group, are advantageously reacted in the presence of boric acid or alkali metal salts thereof, with the amines of the Formula IX. If these amines are further substituted in both o-positions, then it is advisable to also use, together with boric acid, a 1,3-alkane-diol, which forms a cyclic ester with the boric acid, or a 1,3- alkane-diol boric acid ester.

If, as starting material, an anthraquinone compound of the Formula VIII is used, wherein V represents halogen, especially chlorine or bromine, it is advantageous to operate in the presence of copper or of a copper compound, such as copper-(I)-chloride, and with an acid-neutralising agent, preferably at increased temperature. Suitable as an acid-neutralising agent is, in particular, an excess of the amine of the Formula IX, optionally together with an alkali metal salt of a fatty acid having at most 5 carbon atoms or of carbonic acid, such as sodium or potassium acetate and sodium bicarbonate or sodium carbonate respectively, or together with an alkali metal hydroxide such as sodium or potassium hydroxide, or also magnesium oxide.

The reaction of the starting material of the Formula VIII, wherein V represents a methoxy or a nitro group, with the amines of the Formula IX is performed, for example, with an excess of amine in the melt at about 100- 250 C., preferably however in an organic solvent boiling at 110-220 C. Suitable solvents are, e.g. optionally halogenated or nitrated, aromatic hydrocarbons such as xylols and mono-chlorobenzene or dichlorobenzene and nitrobenzene respectively, also alcohols such as alkanols having at least 4 carbon atoms, e.g. butanol or amyl alcohol, or alkylene glycols and monoalkyl ethers thereof. The preferred solvent is nitrobenzene.

The new anthraquinone dyestuffs of the Formula I are yellow to deeply coloured, crystalline, difficulty watersoluble substances. By recrystallisation from organic solvents, they can be obtained analytically pure, but such a purification is generally not required for their use in dyeing.

They are suitable for the dyeing or printing of synthetic organic fibres, e.g. for the dyeing of textile fibres made from linear high-molecular esters of aromatic polycarboxylic acids with polyfunctional alcohols, such as polyethylene glycol terephthalate or poly-(1,4-cyclohexanedimethylol-terephthalate), as well as for the dyeing of textile fibres made from cellulose-2-, -2 /2 -acetate or cellulose triacetate. These dyestuffs can also be used, however, for the dyeing of synthetic polyamide fibres such as polyhexamethylene adipic amide, polycaprolactam or polyaminoundecauoic acid, and also for the dyeing of polyolefins, especially polypropylene fibres, as well as for the dyeing of polyamide in the mass.

Furthermore, they are suitable, depending on the composition, for the dyeing or pigmenting of lacquers, oils and waxes, as well as cellulose derivatives, particularly cellulose esters, such as cellulose acetate, in the mass.

The dyeing of the stated -fibre materials with the difficultly Water-soluble anthraquinone dyestuffs, according to the invention, is preferably performed from aqueous suspension. It is therefore advantageous to finely divide the final materials of the Formula I, usable as dispersion dyestuffs, by grinding them with dispersing agents and possible with further grinding auxiliaries.

Anionic dispersing agents, which are suitable for the purpose are, e.g. the alkylaryl sulphonates, the condensation products of formaldehyde with naphthalene sulphonic acid, the lignin sulphonates; suitable non-ionogenic dispersing agents, are, e.g. the fatty alcohol or alkylphenyl-polyglycol ethers with a higher alkyl radical.

The dyeing of the polyester fibres with the difiicultly water-soluble dyestuffs, according to the invention, from aqueous dispersion is carried out by the usual processes for polyester materials. Polyesters of aromatic polycarboxylic acids With polyvalent alcohols are preferably dyed at temperatures of above C. under pressure. But the dyeing can also be performed at the boiling point of the dye bath in the presence of dye carriers, e.g. phenylphenols, polychlorobenzene compounds or similar auxiliaries, or using the Thermosol process, i.e. pad-dyeing with subsequent treatment in the heat, e.g. thermofixing at -210" C. Cellulose-2 /2-acetate fibres are preferably dyed at temperatures of 80-85 C., whereas cellulose triacetate fibres, as well as synthetic polyamide fibres, are advantageously dyed at the boiling point of the dye bath. The use of dye carriers is not necessary in the dyeing of cellulose-2 /z-acetate fibres or polyamide fibres. Anthraquinone dyestuffs, according to the invention, can also be used for the printing of the stated materials using normal methods.

The anthraquinone dyestuffs of the Formula I, usable as dispersion dyestuffs, draw on to the previously mentioned hydrophobic organic fibre material, especially on to polyethylene glycol terephthalate fibres, very well and they produce thereon strong yellow, orange, red, violet, blue and green dyeings which have very good fastness to light, washing, rubbing, perspiration, sublimation, solvents and decatising.

Furthermore, anthraquinone dyestuffs, according to the invention, can very well be used in admixtures with other dispersion dyestuffs, which are fast to sublimation, for the dyeing of textile material using the pad-dyeing/thermofixing process. Particularly worthy of note is the fact that dyestuffs of the Formula I, produce, in the dyeing of closely woven polyester fabrics or firmly twisted polyester yarns, even dyeings right through. The new dyestuffs of the Formula I also possess the valuable property of being able to produce an textured polyester fibres, e.g. Crimplene, very deep non-Streaky dyeings which, moreover, have good fastness properties, particularly fastness 7 to light and sublimation. The anthraquinone dyestutfs of Formula I also have good stability in the dye liquor and to boiling.

The following examples illustrate the invention. The temperatures are given in degrees Centigrade.

8 precipitates out in the form of beautiful dark violet-blue crystals; the dyestuffs is filtered off, washed with methanol and dried.

From aqueous suspension, the finely divided dyestutf 5 dyes polyethylene glycol terephthalate fibres in even, clear Example 1 blue shades having good fastness to light, rubbing and blirnation. 45.3 g. of l-arnmo 2 bromo-4-(4 -l3-hydroxyethoxy)- anilino-anthraquinone are stirred in 200 g. of pyridine m dyesmfi Obtained the 27 of chloro at 2530 and the deep blue solution is subsequently 1U l l butyl ester f replacfid y 36 2- Of bfomol d to 5 Whil h l i i b i i d formic acid butyl ester with otherwise the same procedure. 27 g. of chloroformic acid butyl ester are added drop- If, in place of the 45.3 g. of l-amino-2-bromo-4-(4'-flwise at this temperature in the course of 30 minutes and hydrOXYM Y)-P anthfaquinone, equivalent the reaction mixture is maintained for a further 2 hours i amounts of an anthra uinone corn ound iven 1n the at 0l0. By the addition of 200 g. of methanol, the dye- 15 f H T M I C H p d g 1 f Stuff of the formula 0 ovnng a e o umn are use an in p ace 0 O NHQ the 27 g. of chloroformic acid butyl ester, equivalent H l amounts of a halogen-formic acid ester listed in Column A Br III of the same table, applying otherwise the same pro- 20 cedure as described in the example, then dyestuffs are obtained which dye polyethylene glycol terephthalate fibres ILIHQ OCHZCHQOCOOQHG in the shades given in Column of this table, these shades likewise having fastness to light and to sublimation.

TABLE 1 Shade on polyethylene glycol tere ph- Number Anthraqulnone compound Halogen-formic acid ester thalate fibres 2 O NH; C1O O O CHzCHzC H; Blue.

l! ge l ll O Z\H- OCHzCHaOH 3 Same as above /CH: Do.

C1COOCH i do C1COOC':H5 Do.

5 do C1-COOCH3 Do.

17H; C1-C0OC5H11 DO.

ll 1 O NH CH2CH2OH 7 O NH: CICOOCH3 D0.

ll 1 G UGE:

CONHCLlzCHaOH 8 O NH: CI-COOCH2C1 Do.

ll l CON TABLE 1-Conflnued Shade on polyethylene glycol tereph- Number Anthraquinone compound Halogen-formic acid ester thalate fibres 9 O NH; Blue.

II ClC 0 O m N l/ O NH CH q ()H S OzNHCHaCHCHzOH 10 O NH: DO.

I! I C1--C O O C O O C 2H5 NH CHa C HzOH 11 I IIIH: C1-COOCE2CBI: D0.

g NH-Q-NHCHzCHaOH 12 IIIH: C1-C0 OCnHa Do.

@i: cmofi ll 0 NH 13 (H) 111B: 01-000 CzH4Br Do.

0 O N H:

II O NH O C H2O H2 0 H 14 l b.1112 Cl-GOOCaH4OCHs Do.

S 0 20 H2 0 Ha o NHQ-O CHaCHaOH 15 C? lf z CICOOOH: Do.

S OQNHOiHfi o NHQ-NHCHzCHzOH 16 Red.

01-00 OQ-Nm TABLE 1-Comtinued Shade on polyethylene glycol tereph- Number Anthraqui none compound Halogen-formic acid ester thalate fibres l7 (a ITIHz ClC O 0 03111 Blue.

NH-C HaCHzO H 18 fl IZIH: ClCOOCH; Do.

/\ c 0 0 can oQ-ocmcmoxx 19 0 NH: Do.

( l IHQSOzCHaCHzOH 2O O NH: CICOOCBHT D0.

OCHzCHaOH.

21 O NH: ClCOOCHzCHnCHgC H D0.

COOCzH;

II O NHQO C HaCHaOI-I 22 Same as above Do.

23 -do ClC OOCzH5 Do.

24 ..do Cl-COOCH; Do.

25 do Do.

26 IIIHI Cl-GOOCzH; Do.

C O O Calil I I O NH- CHaCHzOH biIH Same as above Do. l A 4:000:11

ll 0 NH- CH:

SOgNHCHzCHgOH TABLE 1C0ntinued Shade on polyethylene glycol terephthalate Number Anthraquinone compound Halogen-formic acid ester es 28 O NH: 01- C O O C211 Green I /CH3 000 on CH2OCH3 \n/ o NH-N=N@o0momo11 29 ([1 NH: Cl-C O 0 Q2115 Blue.

CO OCzHs 0 N H -CH3 SO2NHCH2OH2OH Example 30 is then precipitated in fine-crystalline form by the addi- 32.6 g. of 1.4-bis- 3-hydroxyethylamino-anthraquinone are partially dissolved in 150 g. of pyridine and to this mixture are added dropwise, whilst it is being vigorously stirred, 62.6 g. of chloroformic acid phenyl ester in the course of minutes at 0-10 C. Stirring is maintained for a further 1 hour at room temperature and the formed dyestufi of the formula Nrrcmcmo o 0 0G Y Nncmcmo o 0 0G tion in portions of 30 g. of water; the dyestuff is filtered 01f, washed with ethanol and dried.

From the aqueous dispersion of the finely divided dyestufi, polyethylene glycol terephthalate fabric is dyed in very clear and even, deep blue shades.

By using, in place of the 32.6 g. of 1.4-bis-[3-hydroxyethylamino-anthraquinone, equivalent amounts of an anthraquinone compound given in the following Table 2, Column II, and in place of the 62.6 g. of chlyoroformic acid phenyl ester, equivalent amounts of a halogen-formic acid ester listed in Column III of the same table, with otherwise the same procedure as described in the example, dyestuffs are obtained which dye polyethylene glycol terephthalate fibres in the shades given in Column IV of 4.0 this table.

TABLE 2 Shade on polyethylene glycol terephthalate No. Anthraquinone compound Halogen-formic acid ester fibres 31--- O NHCHiCH20H Blue. /l\ ClCOO- CH:

O NHOHzCHzOH 32.... Same as above Do.

33... O NHCHzCHzOH Do.

A I C1COOCH2- H l 0 NHCHaQHzCHzOH 34-.- O NHCHzCHzOH Red.

/|[\ ClCOO- C1 HOCHzCHzNH O 35--- HOCHzCHrNH O NHCHzCHzOH Red.

TABLE 2-Continued Shade on poly ethylene glycol I terephthalate N0. Anthraqumone com pound Halogen-formic acid ester fibres 36"- (|)H (I? IT'HCHQCHQOH ClCOOC H Qi) Blue.

t/\[ [I l O NHCHzCHzOH 37. O NHCHzCHzOH Do.

F (31C 0 0 -CH l I CH I] O NHCHrCHzOlI 38"- O NHCHzCHCIIzOH D0.

il I 01C 0 0 CH2 A c1 I O NHCHzCH-C 1110 H 39.-. O NHCHzC H2011 Red:

CIC 0 O (J N02 40." Cl(. 0 O CzHs Blue-green:

(I? IIIH OC HzCHxOH H 0 NH- OCHCH10II /[0\ I;IH OCH2c-I 2OH ClCOO 0 NH- O CHQCHaOH 42..- ClC OOCaHs D0.

(H) IFH- (OCH2CH2)2OH Example 43 4 hours at the same temperature and the formed dyestuif of the formula 35.8 g. of 5,8-dihydroxy-l,4-bis-[3-hyclroxyethylaminoanthraquinone are stirred up in a mixture of 300 g. of

roforrnic acid ethyl ester are added dropwise in 4-5 min- H utes. The reaction is completed by subsequent stirring for OH 0 I H ii HO l NHCHzCH OCOO C 11 is precipitated out in fine-crystalline form by the addition of 300 g. of ethanol. The dyestulf is filtered oif, washed with ethanol and dried.

Cellulose triacetate fibres and polyethylene glycol terephthalate fibres are evenly dyed in the aqueous dispersion of the finely divided dyestufi in clear green-blue shades.

By using 62 g. chloroformic acid phenylester instead of 43.4 g. of chloroformic acid ethylester, otherwise performing the reaction under the same conditions, a further dyestufi is obtained which gives on polyethyleneglycol terephthalate fibres a green-blue shade.

By replacing, in the above example, the 35.8 g. of 5,8- dihydroxy 1,4 bis B hydroxyethylamino-anthraquinone by 41.8 g. of 5,8 dihydroxy-1,4-bis-B,' -dihydroxypropylamino-anthraquinone, or by 44.6 g. of 5,8- dihydroxy 1,4 bis fi- (,8'-hydroxyethoxy)-ethylaminoanthraquinone, otherwise performing the reaction under the same conditions, very similar green-blue dyestulfs are obtained.

Example 44 To a suspension of 46.5 g. of l-hydroxy-2-benzyl-4- (3-fi-hydroxyethoxy)-phenylamino-anthraquinone and 7 g. of potassium carbonate in 350 g. of chlorobenzene are added dropwise in the course of half an hour at -10, whilst the suspension is being vigorously stirred, 27 g. of chloroformic acid ethyl ester and the reaction mixture is then maintained for a further 2 hours at this CHgCHzOCOOCIHE precipitates out in fine-crystalline form. It is filtered off, washed with methanol and water and dried.

In aqueous dispersion, the finely divided dyestufi draws on to polyethylene glycol terephthalate fibres with a clear violet-blue shade having good fastness to sublimation.

By using, instead of the 46.5 g. of l-hydroxy-Z-benzyl- 4-(3-,8 hydroxyethoxy) phenylamino-anthraquinone, equivalent amounts of an anthraquinone compound given in the following Table 3, Column II, and instead of the 27 g. of chloroformic acid ethyl ester, equivalent amounts of a halogen-formic acid ester listed in Column III of the same table, with otherwise the same procedure as described in the example, dyestuffs are obtained which dye polyethylene glycol terephthalate fibres in the shades given in Column IV of this table, these shades likewise having fastness to sublimation.

TABLE 3 Shade on polyethylene glycol terephthalate Number Anthraquinone compound Halogen-formic acid ester fibres (I) (iiH 01C 0 0 CaHg Violet-blue.

m -Q 6 Q 0 OHaO H1011 46...:.r.;;r.:.:..:: O ()H CIC 0 O C2115 Do.

w HQ

CH2CH2OH 47 O ()H ClCOOCHa-CH=CH Violet.

II o NH-Q-O omo mon 48-..:;--'.---: O OH ClCOOCCh DO.

I o NH-CH1CH=OH 49...:...;........;.'; '0 0H CICOOC HU D0.

TABLE ("i-Continued Shade on polyethylene glycol terep hthalate Number Anthraquinone compound Halogen-formic acid ester fibres 50 (f) (|)H ClCO OC H Violet.

ll I O NH- NHCH:C HzQH 51 LP'I) (|)H BrCOOCzHu D0.

O NH- C H;

S OzNHCHnCHzO ll 52 0 (HI C10 0 O CH; Violet-blue.

ll 0 NH-Q-OCHzCHzOH 53 Same as above Do.

54 do ClCOOCzHs Do.

55 0 (HI Same as above D0.

@AOc HPQ ll 1 0 NH 0 C HzC H: O H

56 Same as above ClCOOCH D0. 57 do ClCOOC4H Do.

58 -do Do.

59 -do D0.

i CH:

60 )(I)\ (311 CICOOCzHg Do.

O NHQWCILCHMOH 61 NO: (t!) (6H Same as above Blue.

I I! OH O NH CHCH1OH 62 O O H .do Violet-blue.

0 NH-QNCHz-OHNH TABLE 3-Continued Shade on polyethylene glycol terephthalate Number Anthraqurnone compound Halogen-formic acid ester fibres 71 ti) CIJH ClCO OCZH5 Violet.

ll l 0 NH- 01 $020 CHzCHzOH 72.--:'.':..:;: .--.T. 0 OH /CH Violet-blne.

ll i O NH- O 0 CH CH OH 72a (I) l|)H ClCO-O-CaHu D0.

O:'0-CH2CH1O-H 72b 0 0H DO- )I\ Cl-CO0 l NH Cl SOz-NH-CHzCHr-OH Example 73 is precipitated from the solution. It is filtered ofi, washed nnonlon crnocoocna with cold methanol and dried.

In aqueous dispersion of the finely divided dyestuff, pure blue shades can be produced on synthetic fibres such as cellulose-2 /z-, triacetate, polyamide and polyethylene glycol tcrephthalate fibres.

By using, in place of 33.8 g. of 1-isopropylamino-4-yhydroxypropylamino-anthraquinone, equivalent amounts of an anthraquinone compound given in the following Table 4, Column II and, in place of the 28 g. of chloroformic acid methyl ester, equivalent amounts of a halogen-formic acid ester of Column III, with otherwise the same procedure as described in the example, dyestuffs are obtained which dye polyethylene glycol terephthalate fibres in the shades listed in Column IV of this table.

AB e Shade on polyethylene glycol terephthalate No. Anthraqulnone compound Halogen-formic acid ester fibres 74.-. CHI CIC O CH: Blue.

0 NHG H CH:

i) I IHCH:CHaOH 75..- Same as above 01C 0 0 01H; Do:

76--- CH; 010 0 O CH; Do.

0 NH-C CHa I g IIHCH2CH2CH2CH20H 77--- O NIH-CH1 ClCOO CH; Do.

ti IHCH2CH1CH2OH o NH@ 010 o 0 CHI-Q V j A IIHCH1CH-OH 79... O NH: CH; Do.-

mcoluh 010000 g NHCHzCHaOH 80..- 0 NH; Do;

o1ooo fiscmom I IHCHaCHaCHH 81-.. 0 NH: CICOOCQHL Do.

COO-Q Example 82 35.8 g. of 1-phenylamino-4-p-hydroxyethylamino-anthraquinone are completely dissolved, by heating, in 400 g. of pyridine and, after rapid cooling of the solution to 0-10, 24.5 g. of chloroformic acid propyl ester are added dropwise, whilst the solution is being well stirred, within 20 minutes. The reaction is then completed by a brief heating to 2025, whereupon the formed dyestufi of precipitates, with the addition of g. of Water, in a fine the formula form. The dyestutf is filtered oil and dried.

From aqueous dispersion, the finely divided dyestufi' draws on to polyethylene glycol terephthalate fibres to give a deep blue shade. The dyeings have good fastness to light, rubbing and sublimation.

By using, instead of the 35.8 g. of l-phenylamino-4-l8- hydroxyethylamino-anthraquinone, equivalent amounts of an anthraquinone compound given in the following Table 5, Column 11 and, instead of the 24.5 g. of chloroformic No. Anthmquinone compound y) NHGHZCHIOH I NHCHzCHaOH acid propyl ester, equivalent amounts of a halogen-formic acid ester listed in Column III of th e sqme tgble with otherwise the same procedure as stated in the example, dyestulfs are obtained which dye polyethylene glycol terephthalate fibres in the shades'given in Column IV'of this table, these shades too having fastness to light and sublimation.

TABLE 5 Shade on polyethylene glycol teraphthalate Halogen-formic acid esterfibres ClCOOCHzCHzCHg- Blue.

87... CH: D0.

0 NH CH; g 0100 o cH1c I I O NHCHMIJHCIBOH 88". C10 0 0 0:11; Blue-green.

O NH O CHzCHgOH /H\ 1 C10 0 O C4He l o Nil-@OCHzCH OH (5 lIIH-OCH2CH2OCH1CH2OH ClCOOCHa Do.

TABLE -Continued Shade on polyethylene glycol terephthalate No. Anthraquinone compound Halogen-formic acid ester fibres 90. ClCOOCzH; Blue-green.

E) I|-IH OCH2CFH-CH2OH 0 NHQ-OOHzCH-CILOH Example 91 Am, i

A r inornonzo 000G precipitates, after the addition of 250 ml. of methanol, almost quantitatively from the deep red solution; the dyestuif is filtered off, washed with methanol and dried.

Polyethylene glycol terephthalate fibres are dyed in the aqueous dispersion of the finely divided dyestulf very uniformly in clar red shades having good fastness to sublimation and rubbing.

By using, instead of the 32 g. of N-methy1-4-B-hydroxyethylamino-anthrapyridone, equivalent amounts of an anthraquinone compound given in the following Table 6, Column II and, instead of the 31.3 g. of chloroformic acid phenyl ester, equivalent amounts of a halogen-formic acid ester listed in Column III of the same table, with otherwise the same procedure as described in the example, dyestulfs are obtained which dye polyethylene glycol terephthalate fibres in the shades given in Column IV of this table, these shades too having fastness to sublimation.

TABLE 6 Shade on polyethylene glycol terephthalate N0. Anthraquinone compound Halogen-formic acid ester fibres 92... H 010 0 0 05111: Yellow.

/'\ if T Y ifi@ cmofi 93..- N-S CIC 0 O CHs-C H=CH1 0rangei I yellow.

I I 0 NHCHaCHzCHzOH 94. NN-CH Red.

i oxcooom-Q l 0 NHCHzCHzOH 0 CIOOOCH CI Do.

| l NH--ocmomon TABLE 6Continued No. Anthraquinone compound Halogen-formic acid ester Shade on polyethylene glycol terephthalate fibres II o NH-C memo H 97... Same as above ClO 0 Red.

Example 98 perature, the dyestutf of the formula i CH: Nn--ocn2om-0 co-ocm-o which has precipitated in the form of very dark violet crystals, is filtered off, washed with methyl alcohol and warm water and afterwards dried at 5060 under reduced pressure.

From aqueous dispersion, the finely divided dyestuif dyes polyethylene glycol terephthalate fibres in reddish blue shades having very good fastness to sublimation and good fastness to light.

Example 99 36 g. of 1-amino-4-bromoanthraquinone-Z-carboxylic acid methyl ester are homogeneously stirred together with 58.5 g. of 4-methoxycarbonyloxyethyl aniline, 22 g. of

potassium acetate and 0.5 g. of cuprous chloride for 18 hours in 200 ml. of n-butyl alcohol at 110-115 During this period of time, the reaction mixture turns blue. The dyestuff of the formula Example 100 2 g. of the dyestutf obtained according to Example 1 are dispersed in 4000 g. of water. To this dispersion are added, as swelling agent, 12 g. of the sodium salt of ophenylphenol as well as 12 g. of diammonium phosphate and 100 g. of yarn made from polyethylene glycol terephthalate are dyed for 1 /2 hours at 95-98. The dyeing is rinsed and subsequently treated with aqueous sodium hydroxide solution and a dispersing agent.

In this manner is obtained a deeply coloured, dark violet-blue dyeing having fastness to light and sublimation.

If, in the above example, the 100 g. of polyethylene glycol terephthalate yarn are replaced by 100 g. of cellulose triacetate fabric, dyed under the stated conditions and afterwards rinsed with Water, a clear blue dyeing is obtained having very good fastness to washing and to sublimation.

Example 101 In a pressure-dyeing apparatus, 2 g. of the dyestutf, obtained according to Example 2, are finely suspended in 2000 g. of Water containing 4 g. of oleylpolyglycol ether. The pH-value of the dye bath is adjusted to 4-5 with acetic acid.

100 g. of fabric made from polyethylene glycol terephthalate are then introduced at the bath is heated within 30 minutes to 140 and dyeing performed for 50 minutes at this temperature. The dyeing is subsequently rinsed with water, soaped and dried. Under these conditions is obtained a deeply coloured blue dyeing having fastness to perspiration, light and sublimation.

The dyestuffs described in the other examples produce, with application of this process, dyeings of equal quality.

Example 102 Polyethylene glycol terephthalate fabric is impregnated on a padding machine at 40 with a dye liquor of the following composition:

20 g. of the dyestuff, obtained according to Example 87,

finely dispersed in 7.5 g. of sodium alginate 20 g. of triethanolamine 20 g. of octylphenolpolyglycol ether and 900 g. of water.

The fabric, squeezed out to ca. is dried at 100 and afterwards fixed during 30 seconds at a temperature of 210. The dyed material is rinsed with water, soaped and dried. Under these conditions is obtained a deeply coloured green-blue dyeing having fastness to rubbing, light and sublimation.

The dyestuffs described in the other examples produce, with application of this process, dyeings of equal quality.

We claim:

1. A dyestufl' of the disperse series of the formula 0 OH l l wherein X is SO -NH, SO O-, 40 and S, R is C C -alkyl, cyclohexyl, phenyl or phenyl substituted by chlorine, bromine, C -C -alky1 or C -C alkoxy, Y is C -C -a1kylene, -CH CH O*CH CH OI and B may be substituted by chlorine, bromine, C -C -a1kyl or C -C alkoxy.

2. A dyestuff as claimed in claim 1 of the formula 34 3. A dyestuff as claimed in claim 1 of the formula t 10 OgNH-C2H4OC O-OC1H5 References Cited UNITED STATES PATENTS 15 2,338,908 1/1944 Dickey et al 260376 LORRAINE A. WEINBERGER, Primary Examiner E. J. SKELLY, Assistant Examiner 0 US. Cl. X.R. 

